Sound recording and reproducing device



Sept. 13, 1938. A. RYSICK SOUND RECORDING AND REPRODUCING DEVICE FiledDec. 21, 1952 Patented Sept. 13,1938:

UNITED STATES SOUND RECORDING AND DEVICE REPRODUCING Arno Rysick,Dresden, Germany Application December 21, 1932, Serial No. 648,245

, In Germany June 17, 1929 4 Claims.

The invention relates generally to sound rev cording and reproducingdevices, and more particularly, to dictating machines adapted for therecording'and subsequent reproducing of sound by the use of a singlemachine.

' It is accordingly an object of the present invention to produce aunitary device operable to both record and reproduce sound impulses.

A further object of the invention resides in the provision of a machineof the class described, embodying separate recording and reproducingheads, adapted-to be selectively moved into engagement; with a recordingdisc by a single manipulative means.

Yet a furtherobject oi the'invention resides in the provision of arecording and reproducing machine embodying a turntable adapted tosupport a disc of recording material, a carriagemovable in a planeparallel to and spaced above the plane I of said turntable, and separaterecording and reproducing heads operatively supported on said carriageand adapted to be selectively moved into or out of engagement with adisc on said turntable by means of a single manipulative device.

Other objects and advantages will be in part obvious and in part pointedout hereinafter.

The invention accordingly consists in the features of construction,combinations of elements, and arrangements of parts as will beexemplified in the structure to be hereinafter described, and the scopeof which will be indicated in the following claims.

In the accompanying drawing, in which is shown one of the variouspossible embodiments illustrative of this invention. I

Fig. 1 is a fragmentary top plan 'view of a recording and reproducingdevice embodying a preferred form of the invention.

Fig. 2 is a fragmentary elevational view of the machine shown in Fig. 1.

Fig. 3 is an illustrative form of circuit arrangement which may beutilized in conjunction with electrical recording and reproducing in amachine of the,type described. Q

Fig. 4 is an enlarged detail view of a part of the structure shown inFigs. 1 and 2.

Corresponding reference characters refer to corresponding partsthroughout the several views of the drawing.

As conducive to a clear understanding of the 'invention, it is pointedout that in combined recording and reproducing machines it is highlydesirable to be able to readihr condition the machine for' either arecording or reproducing operation. In the present instance, suchpurpose is accomplished by providing, a manipulative means common toboth the recording and reproducing heads, and effective to selectivelyen-' gage one or the other with a disc upon the machine, or in thealternative, to maintain both the recording and reproducing heads intheir elevated or ineffective positions out o'f'engagement with thematerial of the .disc.

Referring now to-Figs. 1 and 2, a rotatable turntable is indicated .atiii, a vertically disposed 10 shaft ll, joumalled in any desirablemanner in the housing. of the machine being adapted to support theturntable for rotary movement in a fixed horizontal plane.

A carriage l 2, is slidably supported for advanc- 15 ing and returnexcursions of movement in a hori zontal plane, on'spaced guide rods i3and I4 rigidly supported at their respective ends in the frame ofthe-machine. In the present instance, the rod l3 lies substantiallyinthe plane of the turntable l0 and may be carried in upward extensions ofthe side frames (not shown). A suitable bore, provided in'the carriage,is adapted to slidably receive the rod l3 and the lower portion of thecarriage as shown particularly in Fig. 2, is bifurcated to form spacedparallel legs I5 and it which embrace the rod l4.

I Means is provided'to move the carriage, and in the present instancewill be seen .to comprise a feed screw l1 suitably journalled in theside frames of the machine and arranged to be drivingly engaged with thecarriage through the medium of a spring actuated segment ll pivotallysupported upon a short shaft IS, the ends of which are carried in thelegs I5 and it. In this connection it will suffice to point out thatsuitable provisionis 'made for engaging and disengaging the segment l 8with the feed screw i1.

The carriage i2 includes a. horizontalfy extend- I ing portion 20, whichoverlies the surface of the 40 turntable Ill and operatively supportsrecording V and reproducing heads 2| and 22 respectively. The heads 2|and 22 are independently and joint- 1y movable in vertical planes andjointly movable in horizontal planes to selectively control engage- 4ment' of one or the other with a recording disc 23, adapted to becarried on the upper surface of the turntable l0. To this latter end,the recording and reproducing heads are provided with rigidly formed andleftwardiy extending tubular portions 24 and 25 which are journalledin-pairs of similar, spaced parallel ears 26' and 21. The ea s 26 and 21are formed integrally with a sub-carriage 2B movably supp r ed at therighthand end of the part 20, of carriage l2. A rightwardly extendingplate 29, fixed to the under surface of the carriage is turned upwardlyat to when its tubular part drops thereinto.

It will now be apparent that movement of the sub-carriage will functionto selectively'permit either the recording or reproducing heads toengage a disc upon the turntable or to cause both heads to be held outof engagement therewith. Means are provided to move the sub-carriagewith respect to the carriage proper and thus predetermine the particularone of theheads which is to operatively engage the surface, or, in thealternative, to maintain both heads in ineiiective position. i

In the present instance the sub-carriage, is actuated by means of alever arm 33 pivotally supported intermediate its end in the part 20 ofthe carriage I! by means of a vertically disposed pivot pin 34. Theforward end of lever 33 is suitably articulated to the sub-carriage 28,its rear end being provided with a pin 35 which rides in the cam slot 36of a cylindrically shaped cam 31 join-nailed within the upper endof thecarriage I! on an axis substantially parallel to those of the guide rodsi3 and H. In the present embodiment of the invention, cam 31 is fixed toa shaft 38 one I end of whichas shown in Fig. 1, is pro'-'ided with anoperating lever 39. It will be apparent that rotation of shaft 33through the medium of lever 39 from the position shown in Fig.1, willfunction to rotate the .cam 31 thus imparting movement to the pin 35.01lever 33 so as to move the sub-carriage and its articulated recordingand reproducing heads downwardly as viewed in Fig. 1. The extent of thismovement of the operating lever 38 will determine whether the recordinghead will subsequently be permitted to drop into the notch 32 or whetherboth' heads will be supported by the shoulder 3| of the part 30 of plate19 so as to maintain both inineifective position.

As shown in Fig. 3, the recording and reproducing heads may beelectrically comiected to a suitable amplifying means indicatedgenerally at 40. A conductor ll ior example, is util zed to provide anelectrical connection from the recording head ii to the amplifier, anda' conductor 42 similarlyconnects the reproducer 22 and the amplifyingunit. A microphone 43 and loud speaker 44 are electrically connectedwith the amplifying unit through the medium of the conductors 45 and i6and a conductor 41 may be connected to a suitable -source,.of electricalenergy. A conductor 48 may conveniently be employed to provide anelectrical connection from a source of energy to a turntable drivingmotor (not shown), and a switch 49 mounted on the amplifying unit panelis interposed in the power line to the driving motor. A second switch 50may be arranged to control the electrical circuit to the recording andreproduc- .ing heads.

It will be seen that I have provided a simple and economicallymanufactured means for selectively controlling recording and reproducingheads to cause one or the other to operatively engage a disc upon theturntable ID, or, in the alternative, to effectively malntain'both'headsin inoperative position.

I claim as my invention:

1. Inc. recording and reproducing device, the combination of a rotatablerecord carrier, a carriage supported for movement in a plane parallelwith and overlying the record carrier, recording and reproducingdevicesoperatively mounted on said carriage, a lever arm pivoted on saidcarriage and arranged to Jointly move said recorder and reproducerrelative to said carriage in a plane spaced above the plane of therecord carrier, means on said carriage to support the recorder andreproducer above and out of engagement with a record on said recordcarrier. and to permit downward movement of either the recorder orreproducer into engagement with a. record on said carrier'in a singlepredetermined'position, and manual means to actuate said lever.

- 2. In a recording and reproducing device, the

combination of a rotatable record carrier, a carriage supported formovement in a plane parallel with and overlying the record carrier,recording and reproducing devices operatively mounted on said carriagefor movement relative thereto, a

lever arm pivoted on said carriage and arranged to jointly move saidrecorder and reproducer, a guiding ledge fixed to said carriage andunderlying said recorder and reproducer, said guiding ledge serving tosupport the recorder and reproducer above and out of engagement with arecord on said record carrier, and having a notch formed thereinpermitting downward movement of either the recorder or reproducer intoengagement with a record on said carrier, and manual means to actuatesaid lever.

3. In a recording and reproducing device the combination of a rotatabledisc record carrier, a carriage arranged for movement in a plane spacedabove the plane of the record carrier, recording and reproducing devicesoperatively'supported on said carriage and adapted for joint movementrelative thereto in a plane parallel to andspaced from the. plane of therecord carrier and independent movement in a plane substantially normailto said last mentioned plane to engage a record on said carrier, and. asingle manual means effective to move said devices to cause one or theother to engage a record on said carrier.

4. In a recording and reproducing device. the combination of a recordcarrier, a carriage arranged for movement iii a plane parallel with, and

